Could someone please help me with this problem?
I first started by finding the transfer function of the circuit.
I called the top node X, the + terminal of the op amp is Y, the - terminal is H, and the input is Vs and the output is Vs.
With nodal analysis at each node, I came with the following equations and value for H(s):
I obtained H with the following Matlab code:
My transfer function seems rather long and large. But can someone please clarify that is it correct ?
Many thanks in advance.
I first started by finding the transfer function of the circuit.
I called the top node X, the + terminal of the op amp is Y, the - terminal is H, and the input is Vs and the output is Vs.
With nodal analysis at each node, I came with the following equations and value for H(s):
I obtained H with the following Matlab code:
Rich (BB code):
syms R1 R2 k R3 C1 C2 real; syms s;
mat = [ 0 ((1/R3)+(1)/(k*R3)) -(1/R3);
s*C1 -(s*C1-(1/R2)) 1/R2;
s*C2+s*C1+(1/R1) -(s*C1) -(s*C2);];
vec = [0;
0;
1/R1;];
H=[0 0 1]*inv(mat)*vec,[n,d]=numden(H), p=solve(d,s),Rc=solve(p(1)-p(2),R)
pretty(H)
Many thanks in advance.